It is intended to be a collection of crystallographic knowledge as
discussed on the CCP4 mailing list, and elsewhere.
It is wider in scope than CCP4 as it may contain information about
anything relevant
to protein crystallographers, whether methods-related ("what is the best
program for purpose X?"), problem-oriented ("my crystals melt if I look
at them"), or concerning hardware ("what is your opinion on robot X /
computer Y?").

Individual program documentation

The distribution contains individual program documentation for
all programs, both in HTML format and as formatted text (for use with the
man command). It is intended that users look at the documentation
locally, to ensure compatibility with the locally installed programs
and to avoid network traffic. However, documentation for the latest
release is also available here:

CCP4 Manual

The CCP4 manual gives an overview of the CCP4 suite in the context
of the structure determination process. Its content is distinct from the
program documentation, and while it is becoming increasingly out-of-date
it still contains useful background material.

Tutorials

For a workshop in Japan in 2000, Liz Potterton and Martyn Winn prepared tutorials
in HTML, to be used with CCP4i. These have since been developed by Maria Turkenburg
with extensive help from Eleanor Dodson, Pryank Patel, Norman Stein and others, into a
set of tutorials which is distributed with the suite (which is the version to use, for
reasons described above).
The tutorials are also available here:

Maths for Protein Crystallographers

Eleanor Dodson prepared a document containing all the maths a protein
crystallographer might come up against. It serves to have this all together, and
available on the web, so Maria Turkenburg developed it further. It is distributed
with the suite (which is the version to use, for reasons described above) as a set of
documents in which certain symbols are represented by small .gif-pictures. This
is not ideal, since a change of font by the user may make them stand out badly
from the text. It is recommended to view the documents with 12pt Times and 10pt
Courier fonts. They are also available here:

Crystallographic Guidance

As well as information on how to use the programs, the individual program
documentation in the CCP4 installation contains background information on the
science behind the programs, which is well worth reading.

Certain topics warrant a document dedicated to them. Examples of these are:
re-indexing, twinning, alternate origins, cheshire cells, symmetry, and
density modification. These are distributed with the suite in the 'General'
section of the documentation (which is the version to use for reasons described
above), and are also available here:

Roadmaps through the Suite

'Roadmaps' are an excellent way to get an overview of the processes involved
in macromolecular structure determination and the use of CCP4 programs therein.
The current recommended roadmaps through the CCP4 suite have been produced
by Maria Turkenburg and are distributed with the suite (from version 4.1.1).
They are also available here:

Kevin Cowtan had previously produced the following roadmaps showing which
programs may be useful in various stages of the structure determination
(these roadmaps are unsupported and may now be slightly dated...).